I belive
@Gingero doesn't use crickets at all for her panther and parsons.
All of the above are good suggestions. You may find it difficult to get your cham into dubia roaches. I've only had one chameleon that likes them out of many chams that I've owned.
Green banana roaches were a good substitute, someone else mentioned these, too. Nick Barta with Full Throttle Feeders used to sell them, don't know if he still does.
I do my best to stay stocked up on silkworms and feed the moths if I can. Hornworms are good in moderation.
Pheonix worms (black soldier fly) larvae are great. When they become flies, they have less nutrition, but the chams love them. It's like a challenge for them.
Mantids are good if you can find an ooth and then separate the babies in deli cups once they hatch. They'll fight to the death lol
If you can find grasshoppers, which is hard in the states, they're great. My chams love them. You might consider catching your own and breeding them. Feed the nymphs to your panther and the adults when he/she is older. Just remove the back legs on the adults so you cham doesn't cut his mouth. The back legs have spurs (not sure if that's the technical term) that can cut cham mouths.
Snails I've read are good. I can't attest to this, though. I'm currently breeding them so we shall see.
With all these suggestions, you can breed them and keep yourself stocked up since some of them are harder to come by. You can save money that way. There's plenty of bug people that have posted blogs about breeding them. Just search google.